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Adamsite-(Y) & Thomasclarkite-(Y)

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CFL918324

Adamsite-(Y) & Thomasclarkite-(Y)

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.3 × 0.2 × 0.1 cm
Description

Typical specimen of two type locality species, adamsite-(Y) and thomasclarkite-(Y).  Adamsite-(Y) is found in only 3 localities worldwide, while thomasclarkite-(Y) is found in only 2 localities.  Collected by Gilles Haineault.  Ex-Paul Lortie specimen.

Mineral Data
What's on the rock

Adamsite-(Y)

Formula: 
NaY[CO3]2·6H2O
Strunz: 
5.CC.30
Crystal System: 
Triclinic
Hardness: 
3.0
Streak: 
White
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Thomasclarkite-(Y)

Formula: 
(Na,Ce)(Y,REE)(HCO3)(OH)3·4H2O
Strunz: 
5.DC.20
Crystal System: 
Monoclinic
Hardness: 
2.0 - 3.0
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

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